Abstract:

To accurately measure the validity guide sign information at intersection, combined with the theory of man-machine system, the information demand, cognitive behavior theory and psychological expectation of the drivers that on the comprehension and decision are comprehensively considered, and the major factors that affect the validity of information are analyzed. This paper selects satisfaction of information demand, information correlation, information amount, information understanding and driver’s psychological expectation as quantitative indicators of the guide sign information validity, then the quantitative model is established. Using the model for experimental analysis, the results show that the quantitative data can accurately represent the validity of guide sign information at intersection, and rationally reflect the major factors, thereby provide references for the more reasonably design of guide sign.

Key words: urban traffic, information validity, quantitative model, guide sign, man-machine system

摘要：

为了精确度量交叉口指路标志信息的有效性，结合人机系统理念，综合考虑驾驶人在指路标志信息理解、判断及决策过程中的信息需求、认知规律及心理预期，分析影响信息有效性的主要因素，选取信息需求满足程度、信息关联强度、信息适量程度、信息理解难易度及驾驶人心理预期作为标志信息有效性的量化指标，建立交叉口指路标志信息有效性量化模型.运用模型进行实验分析，结果表明，模型量化数据能够精确表征交叉口指路标志信息的有效性，同时可以全面体现影响指路标志信息有效性的主要因素，进而为更加合理地设计、设置指路标志提供参考及依据.

关键词: 城市交通, 信息有效性, 量化模型, 指路标志, 人机系统